Production of manganese-doped ZnO-based NTC thermistor via combustion reaction

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发表日期：

2024年3月18日

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Wictor Magnus Patrício Araújo de Lima,
Iris Kemilly Duarte Vieira,
Joélcio Lopes de Oliveira Júnior,
Danniel Ferreira de Oliveira,
Ramon Alves Torquato

摘要

This study examines the effects of Mn²⁺ doping on the microstructure, morphology, and thermoresistive properties of the Zn_x-1Mn_xO system (x = 0.8, 0.15 mol), synthesized via a combustion reaction. After uniaxial pressing (191 MPa) and sintering (1373 K), the samples exhibited NTC thermistor characteristics without a second phase. The decrease in the energy gap to 2.9 eV (Mn08) and 2.69 eV (Mn15), along with average particle sizes of 8.79 µm and 2.91 µm, respectively. The parameters α, β, A, B, C, and SF highlight the influence of Mn²⁺ doping on the properties of these materials, with potential applications in NTC thermistor devices.

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